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Bi2WO6作为一种新型半导体光催化剂,具有较窄的带隙宽度和特殊的层状结构,因而显示出良好的可见光催化性能。本文综述了围绕提高Bi2WO6的光催化活性和实用性而开展的相关研究成果,包括:纳米结构Bi2WO6材料;分级超结构Bi2WO6材料;Bi2WO6光催化剂的系列修饰改性,如金属氧化物复合、碳烯和金属单质的表面沉积,以及金属离子和非金属离子的掺杂等。此外,还从回收角度综述了Bi2WO6的固定化技术。最后对Bi2WO6光催化剂的发展趋势进行了展望,强调对Bi2WO6进行带隙调控,并加强对其异质结构界面状态的研究,通过理论计算可深入理解光催化机制,以从制备入手指导现有催化剂的改良和设计新型光催化剂。
As a new type of semiconductor photocatalyst, Bi2WO6 has a narrower bandgap width and a special layered structure, which shows good photocatalytic performance. In this paper, the research results on improving the photocatalytic activity and practicability of Bi2WO6 are summarized, including nanostructured Bi2WO6 material, hierarchical super-structure Bi2WO6 material, and series modified modification of Bi2WO6 photocatalyst such as metal oxide complex, And the surface of single metal deposition, and metal ions and non-metallic ions doped. In addition, Bi2WO6 immobilization technology is also reviewed from the perspective of recycling. Finally, the development trend of Bi2WO6 photocatalyst is prospected. The band gap regulation of Bi2WO6 is emphasized and the interface state of the heterostructure is enhanced. The theoretical calculation can be used to understand the photocatalytic mechanism in order to guide the preparation of the existing catalyst Improve and design new photocatalysts.